1451021513 has 4 divisors (see below), whose sum is σ = 1451853840. Its totient is φ = 1450189188.

The previous prime is 1451021503. The next prime is 1451021527. The reversal of 1451021513 is 3151201541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3151201541 = 18269 ⋅172489.

It is a cyclic number.

It is not a de Polignac number, because 1451021513 - 2¹⁶ = 1450955977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1451021503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413543 + ... + 417036.

It is an arithmetic number, because the mean of its divisors is an integer number (362963460).

Almost surely, 2^1451021513 is an apocalyptic number.

It is an amenable number.

1451021513 is a deficient number, since it is larger than the sum of its proper divisors (832327).

1451021513 is an equidigital number, since it uses as much as digits as its factorization.

1451021513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832326.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1451021513 is about 38092.2762906078. The cubic root of 1451021513 is about 1132.1169268378.

The spelling of 1451021513 in words is "one billion, four hundred fifty-one million, twenty-one thousand, five hundred thirteen".